From: Jacques Garrigue <garrigue@math.nagoya-u.ac.jp>
To: colanderman@gmail.com
Cc: caml-list@inria.fr
Subject: Re: [Caml-list] Performance of immediate objects
Date: Wed, 12 Jul 2006 09:51:24 +0900 (JST) [thread overview]
Message-ID: <20060712.095124.108739217.garrigue@math.nagoya-u.ac.jp> (raw)
In-Reply-To: <875c7e070607110710k2ca8d548i7f9d8e22d801df8e@mail.gmail.com>
From: "Chris King" <colanderman@gmail.com>
> Is there a substantial difference to the way in which
>
> class foo (i:int) = object
> val v = i
> method bar = v
> end
>
> let mk_foo i = new foo i
>
> and
>
> let mk_foo (i:int) = object
> val v = i
> method bar = v
> end
>
> are compiled? I've run a couple tests with the above and immediate
> objects seem to be about 15% slower than classes. Is this because a
> new method table is created for the immediate object every time or is
> that the case for classes also?
Certainly not. It would not be a 15% slowdown, but rather 10000%.
Initialization occurs only once, but one needs to check whether it was
done every time an object is created.
However, the 15% slowndown is for bytecode. For native code this is a
15% speedup. Guess which one we try to optimize.
Jacques Garrigue
next prev parent reply other threads:[~2006-07-12 0:48 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-11 14:10 Chris King
2006-07-12 0:51 ` Jacques Garrigue [this message]
2006-07-12 4:08 ` [Caml-list] " Chris King
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